GRM21BR72E103KW03L

The GRM21BR72E103KW03L is a multilayer ceramic capacitor (MLCC) manufactured by Murata, one of the world's leading producers of passive electronic components. This capacitor is part of Murata's GRM series, which serves broad applications across industrial, consumer, and automotive electronics where reliable energy storage and signal filtering are required. Multilayer ceramic capacitors like this component are fundamental building blocks in modern electronics, used for applications such as power supply filtering, signal coupling and decoupling, noise suppression, and resonant circuits. The GRM series is specifically designed for general-purpose use across a wide range of consumer and industrial applications, making these capacitors among the most widely specified passive components in the industry. The part number itself encodes important design characteristics. The "21" in the designation indicates the physical case size—specifically 0805 in metric dimensions (2.0mm × 1.25mm)—making it a surface-mount device suitable for automated board assembly. This compact footprint is preferred in space-constrained applications while remaining large enough to offer reasonable capacitance values and voltage ratings. The "BR" coding identifies the dielectric material composition, which balances capacitance stability with voltage handling characteristics typical of general-purpose applications. Engineers commonly specify this exact part when they need a dependable MLCC in the 0805 package that provides good performance across commercial temperature ranges. The component offers stable operation across the temperature variations typical of industrial and consumer environments. Its construction as an MLCC provides inherent reliability through multiple internal ceramic layers, reducing the risk of catastrophic failure compared to single-layer designs. The GRM21 series represents a mature, well-established platform with extensive qualification history across industries. This makes the GRM21BR72E103KW03L a low-risk specification choice for design engineers who prioritize supply chain stability and long-term availability. The part's widespread use means it has been thoroughly validated in countless applications, and replacement alternatives are readily available if needed. This capacitor is commonly found in consumer electronics, industrial control systems, telecommunications equipment, automotive modules, and power management circuits. Its broad applicability makes it a standard stock item for engineers developing products that require general-purpose energy storage and filtering without specialized performance requirements. When selecting this specific part number, engineers benefit from Murata's reputation for consistent quality, the proven reliability of the GRM series platform, and the practical advantages of the 0805 surface-mount package in modern PCB assembly processes.